Remove '.sh' extension from the coreclr csc/vbc scripts

Naming the execution scripts 'csc.sh' and 'vbc.sh' is counter to the
convention of not using any extension on *nix executables. While the
scripts are not strictly executable programs, they are meant to be
transparent shims around the actual execution of the compilers on *nix

cibuild.sh

@@ -155,8 +155,8 @@ build_roslyn()
     local bootstrapArg=""
 
     if [ "$OS_NAME" == "Linux" ]; then
-      bootstrapArg="/p:CscToolPath=$(pwd)/Binaries/Bootstrap /p:CscToolExe=csc.sh \
-/p:VbcToolPath=$(pwd)/Binaries/Bootstrap /p:VbcToolExe=vbc.sh"
+      bootstrapArg="/p:CscToolPath=$(pwd)/Binaries/Bootstrap /p:CscToolExe=csc \
+/p:VbcToolPath=$(pwd)/Binaries/Bootstrap /p:VbcToolExe=vbc"
     fi
 
     echo Building CrossPlatform.sln

src/Compilers/CSharp/CscCore/CscCore.csproj

@@ -89,7 +89,7 @@
     <None Include="csc.rsp">
       <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
     </None>
-    <None Include="csc.sh">
+    <None Include="csc">
       <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
     </None>
     <None Include="project.json" />
@@ -97,4 +97,4 @@
   <ImportGroup Label="Targets">
     <Import Project="..\..\..\..\build\Targets\VSL.Imports.targets" />
   </ImportGroup>
-</Project>
+</Project>
\ No newline at end of file

src/Compilers/VisualBasic/VbcCore/VbcCore.csproj

@@ -80,7 +80,7 @@
     <InternalsVisibleToTest Include="Roslyn.Compilers.VisualBasic.CommandLine.UnitTests" />
   </ItemGroup>
   <ItemGroup>
-    <None Include="vbc.sh">
+    <None Include="vbc">
       <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
     </None>
     <None Include="vbc.cmd">
@@ -97,4 +97,4 @@
   <ImportGroup Label="Targets">
     <Import Project="..\..\..\..\build\Targets\VSL.Imports.targets" />
   </ImportGroup>
-</Project>
+</Project>
\ No newline at end of file